bgfx/examples/45-bokeh/varying.def.sc

vec4 a_position  : POSITION;
vec2 a_texcoord0 : TEXCOORD0;
vec3 a_normal    : NORMAL;

vec2 v_texcoord0 : TEXCOORD0;
vec4 v_texcoord1 : TEXCOORD1;
vec4 v_texcoord2 : TEXCOORD2;
vec4 v_texcoord3 : TEXCOORD3;
vec3 v_normal    : NORMAL = vec3(0.0, 0.0, 1.0);